Glass-tank furnace



Malfcll 24, 1931. ol ROSENSTElN 1,797,590

GLASS TANK FURNACE Filed Aug. 25, 1926 w INVENTOR. N; l'o/ ML VM A TTORNE YS.

Patented Mar. l24, 1931 UNITED STATES PATENT OFFICE OTTO .BOSENSTEIN, OFSAN FRANCISCO, CALIFORNIA, ASSIGNOR TO ILLINOIS PACIFIC GLASSCORPORATION, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALI-GLASS-TANK FURNACE Application leo. August 23, 1926. Serial No. 130,958.

This invention relates to glass tank furnaces and especially to animproved construction thereof. To those skilled in the art it is wellknown that a very high and destructlve heat must be maintained in thesefurnaces. As a result of this high heat, the molten glass eats its waythrough the furnace wall blocks and particularly through the ointsbetween the blocks, and the furnace walls must therefore be frequentlyrebuilt to remedy this defect. It is the object of this invention to soimprove the construction of such a furnace as to avoid a veryconsiderable amount of this destructive effect and thereby overcome thenecessity of so frequently rebuilding the furnace walls.

In the accompanying drawing, I have illustrated one specific embodimentof my invention, but it will be understood that theinvention can beotherwise embodied and that the drawing is not to be construed asdefining or limiting the scope of the invention, the claims appended tothe specificationbeing relied upon for that purpose.

Referring to the figures of the drawing:

Fig. 1 is a fragmentary sectional view through a glass tank furnaceembodying my invention.

Fig. 2 is a fragmentary'elevation of one of the inner side wallsthereof.

In the drawing, 1 indicates the bottom wall and 2 one side wall of thefurnace. walls are constructed of relatively large blocks 3 ofheat-resisting clay. The greatest amount of deterioration of the sidewalls, as above referred to, takes place near the bottom and top of thefurnace. This is particularly due to the pressure of the liquid bathbeing greatest at the bottom and the temperature thereof being greatestat the top. As has also been illustrated, the main deterioration .of thewalls takes place at the horizontal joints between the blocks. Inaccordance with my invention, I so construct the side walls as to avoidlocating an of these joints near these points of greatest estruction.illustrated in the drawing, I form the bottom and side walls ofrelatively large blocks 3, 50 but in constructing the side walls I useblocks 4 at the bottoms thereof which are of considerably less thicknessvertically than the verti- .cal thickness of the bottom wall. It may bestated that the wear on the bottom 1 of the furnace is such that fromonehalf inch to one inch of the upper side thereof deteriorates peryear. The side wall joint 7 .essary.

The provision of this initial bottom 1layer of smaller blocks alsobrings the top surface of the next block 3 thereon to a positionconsiderably above the bottom of the furnace. This arrangementfurthermore sol elevates the next large block thereabove that t-he upperlsurface of this top large block is above the normal top surface 5 ofthe molten bath 6.

The result of the construction above described is as follows:

The first horizontal joint 7 between the side wall blocks isconsiderably below the bottom wall of the furnace and is therefore notaffected by the molten bath. rlihe intermediate joint 8 is considerablyabove the bottom of the furnace and considerably below the normal topsurface 5 of the molten bath. rIhis joint 8 is therefore locatedintermediate these most destructive points and is therefore less aectedby the deleterious effects of the molten bath than when located near thebottom and top in the ordinary furnace construction.

The location of the greatest destructive effect on the furnace walls isindicated by broken lines in Figure 1 of the drawing. In my improvedconstruction, the blocks are so arranged that the greatest resistance tothis destructive effect is located at these points. By the use furnacewalls need not be replaced until the same have deteriorated tosubstantially the amount indicated by the broken lines.

of this improved construction, the

It is believed that the construction ond mo teriei edvente s of myinvention wii be clear from the a, ove description teken in con nectionwith the eccompnnying cirnwlng.,l

Heving thus describe my invention, what El claim anti desire to secureby Letters Patent 1s- 1*D A glass tank furnace ci the characterdescribed having e bottom Weil enti side Weils, seid side Wallscomprising e lowerinost row of bricks Isubstentislly iess in verticeithiclmess than said bottoni Waii, e second row of bricks extendingsubstentieiiy shove the top surface of ssii bottom weil en s; thirfi rowof bricks extending to e point above the norinni top surface of the,moiten beth contained by tie'furnecc.

2. A giess tank furnace comprising e bottom Wal end side weils formen ofhorizontally dis oseni rows of bricks: the lowerinost row et ricks insei side weils being epproximately one haii the thickness of seid bottomWeii whereby the other bricks in the side Wells may be repeatedlyreplaced without necessitating the (iistmrbsnce of seid lowermost row orbricks.

3. A. gess tank furnace comprising'e bottom wail and side Weils formedof horizontely disposeci rows of bricks, the iowermost row of bricks inseid side weils being approxa imeteiy one heli the thickness of saidbottoni Wal whereby' the other bricks in the siiie Weils me berepeatedly replace@ without necessitating the disturbance of seidlowermost row' of bricks, emi whereby erosion of said bottom Wsl willnot expose seid lowermost row' of' bricks to Contact With the bethwithin the furnace until seid bottom Well is worn to one half itsoriginai thickness.,

GTT@ ROSENSTEN

